Improvement in steam and vacuum pumpsv



B. c. vANDUz`EN.- STEAM AND VACUUM PUMP.

Patented. Jan. 4,1876.`

No. 171,886. n

@n @QE/ NJETERS. PHOYO-LYTNDGRAFHER, WASHINGTON. D. C.

lilili'PivoVEiviE'NT iN STEAM AND im,cuiviv` Ps?, .i

Specification forming part of lLetterisi PatentNo.' 171;,8'86, datedJanuaryLl-,1l87d,r applicationgled I October 13,1875.

To all whom it may concern."l n f kBe it known that I, BENJAMINO. VANDZEN,

of Uincinnati`,-Hamilton county,'State of Ohio, h ave in ven ted'an Im provementin Direct Steam Vacuum-Pum ps, of whichv the 'following' is a specication My invention consists, rst, in the combin'av tion, with the receiving-chambers, of perforated screensto check the upward throw ofthe water, and so heat the water as thatbut lit' Y of a side pipe, passages, and valves operating to automatically convey injection-Water to the top of each side of the pump alternately, to assist coiidensation and facilitate the regular movenientof the pump without the necessity of an air-vessel; fourtli,in the provision of a regulating-valve in the side pipe for determining the admission ot' injection-water to the vessels,

and thereby regulating the speed of the pump.

`Figure l is a vertical section parallel with the diaphragm which divides the pumpingvessels, the section at the discharge-valves, being taken on line'Z Z of Fig. Fig. 2 is a vertical section across the dividing-diaphragm. Fig. 3 is a cross-section of the discharge-valve chamber on line X X ot' Fig. 1. Fig. 4 is an elevation of the side pipe.

A A' are the two chambers, into and from which the water is alternately received and discharged.. B is the supply-pipe, and 0 the discharge-pipe. D D are the receiving-valves, and E E the discharge-valves. The discharge valves E E are hinged to ears cast upon the valve-seat plate e, in the ordinary Way, and stop upward against the guard ei, and the reception-valves are hinged to ears upon the plate d, and stop upward against the diaphragm F, which divides the chambers A A. G is a valve-chamber, secured-by flange-connectioii, as shown, to the top of the chambers at the other end on the plug J, which'is cored v l' assliown', fitted snugly, in` tlied'chalblfandf shown,'tofcoinmunicate from a\'single'.steam:v '1

the passage being governedlby the respective'`I ends ofthe valvelin' motion. QOwing tothe provision of the `sleeve H thel vaiveis moved ff with'but little force, and although ."mypump o v has but very little ram'miig effect of the Water in completing 'its entry into 'the Water-chaim bers', that little isamplysufcient to move 'thel valve promptly, and this force'is depended upon t0 move it. The steam which drives out .the Water is Passed through slits or notches a at each end ot' the sleeve, and these notches thus turning steam on the full Water-chamber and cutting it off from the chamber A', which1 is then ready to condense' and receive. The effect of this sudden throw of tlie valve is the lessening of pressure ot' steam on the unseated end ofthe sleeve H and a coiicussive increase -in the slits ofthe other end suiiicient to cause the sleeve to be thrown over, so -as togovern through its slits the admission ot' steam to the full Water-chamber. Between the chamber G l and the separate chamber A A conical screens M are provided, preferably of perforated copper, and in sets of two or three, so that the water will have to pass throughinore than one. rllie purpose ot' these screens is to reta-in, as much .as possible, the temperature of thev steam to check the water as it reaches the top of the vessel, land, while thus retarding its velocity and checking its rainining tendency, to heat it, so that when steam is admitted to it there will be but little condensation. I iny troduce a valve, N, in the suction-pipe B to permit the operator to so regulate the admission of water tothe pump as to govern there by the speed of the pump andV regulate the amount of ramming action ot' the water upon the valve 1. Pis a side pipe communicating through cross-passage Q and holes R'lt with 'lllevalves` V areinseparatepookets o c; Fig." 14, thezi oposgpagnggeifopming;ithoioniymoi muioation; andfsimilar sepaifatofpocketemgg afforded for valves By theuse of thosde` t pipe and valves the water o L sul flied, offthe wateij-ohambersytho steam-ches@ mit? they qoiliclf sorgono, which whollyi .covext i silbstafntiztliy asian@ fom` thenpnipofse slpooifiod;

purposo` s pociod;

theportfbetwen the steam-Ghost and thoreg` "1"; Elependiuto lon; o wohinbexjGtleove"t Hu, and volvo I; constructed and t opemtlng` t 

